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ECH3

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ID = 274
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
Identical to ECH3 = MECH3
Similar Tubes
Heater different:
  ECH3S
Different connections:
  E1R
Other base:
  ECH33 ; ECH3G ; X147
Other base and data slightly different:
  ECH11 ; OM10 ; WE20
Multiple differences or of other kind:
  6E8G ; 6E8MG
First year Feb.1939 Tube leaflet collection E.Erb Philips Book II [178]
First Source (s)
Feb.1939 : Daten und Schaltungen moderner ... Röhren; Philips
Jan.1939 : L'Histoire Singulière du Tube Radio; G. Duperray 2009
Predecessor Tubes ECH2   EK2   ACH1   21TH8   TACH1   ACH1_Tungsram   CCH2   EK3  
Successor Tubes 1940   ECH4   ECH21   ECH42   ECH21_9pin  

Base Europe side contact P8A (Au P, 8SC) (Codex=Sa) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Tube prices 14 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

ech3.png
ECH3: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
    More ...
84.png ECH3: Telefunken Werkstattbuch
Wolfgang Bauer

More ...

Just Qvigstad
ech3_spec.png
ECH3: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

More ...
Usage in Models 1= 1938?? ; 1= 1938? ; 3= 1938 ; 38= 1939?? ; 40= 1939? ; 305= 1939 ; 59= 1940?? ; 36= 1940? ; 266= 1940 ; 13= 1941?? ; 32= 1941? ; 176= 1941 ; 5= 1942?? ; 15= 1942? ; 87= 1942 ; 8= 1943?? ; 9= 1943? ; 51= 1943 ; 7= 1944?? ; 12= 1944? ; 44= 1944 ; 30= 1945?? ; 17= 1945? ; 56= 1945 ; 11= 1946?? ; 7= 1946? ; 71= 1946 ; 15= 1947?? ; 21= 1947? ; 73= 1947 ; 39= 1948?? ; 18= 1948? ; 65= 1948 ; 19= 1949?? ; 26= 1949? ; 57= 1949 ; 21= 1950?? ; 11= 1950? ; 14= 1950 ; 1= 1951?? ; 5= 1951? ; 14= 1951 ; 1= 1952?? ; 2= 1952? ; 3= 1952 ; 1= 1953?? ; 1= 1953 ; 1= 1954 ; 8= 1955?? ; 1= 9999?? ; 1= 9999? ; 5= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1823

Collection of

 
ech3_644.jpg

ECH3
 

Variants

ECH3 with gold-colored bulb, although the ECH3 belongs to the red series.

ECH3 with green-colored bulb, although the ECH3 belongs to the red series.

the normal metallized coating at the glass bulb is replaced by a metal shield around the electrode structure

ECH3 with tubular (straight) bulb


Forum contributions about this tube
ECH3
Threads: 1 | Posts: 1
Hits: 5801     Replies: 0
ECH3 (ECH3)
Konrad Birkner † 12.08.2014
06.Jan.06
  1 Siehe auch
EK2 Ersatz durch ECH3
 
ECH3
End of forum contributions about this tube

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